438384194 has 4 divisors (see below), whose sum is σ = 657576294. Its totient is φ = 219192096.

The previous prime is 438384187. The next prime is 438384203. The reversal of 438384194 is 491483834.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 344584969 + 93799225 = 18563^2 + 9685^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109596047 + ... + 109596050.

Almost surely, 2^438384194 is an apocalyptic number.

438384194 is a deficient number, since it is larger than the sum of its proper divisors (219192100).

438384194 is a wasteful number, since it uses less digits than its factorization.

438384194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219192099.

The product of its digits is 331776, while the sum is 44.

The square root of 438384194 is about 20937.6262742461. The cubic root of 438384194 is about 759.6583147811.

The spelling of 438384194 in words is "four hundred thirty-eight million, three hundred eighty-four thousand, one hundred ninety-four".